Usually I apply both henna and indigo to my long dark brown hair because I was always afraid that henna alone would make my hair appear too red, but this time I put just the latter on my tresses. In the sunlight my hair does have brilliant crimson highlights, but the appearance in regular light is far more subtle.
Watch the video to see how I applied the henna to my hair. I only used USDA organic henna, which is called Lawsonia inermis (henna) leaf powder. This henna has nothing added to it, which can compromise the quality. Usually I also add Indigofera tinctoria (indigo powder), but this time around I thought my hair did not look much lighter doing only the henna application. To mix my henna I add eight ounces of hot water and a fourth cup of coconut oil, and stir up the mixture until it is smooth. I let it sit for four hours, and then apply the henna to my hair, cover it with several plastic shower caps I pick up at the dollar store, and allow this sit on my hair for four more hours.
At the end, I rinse out my hair with a natural coconut conditioner, and do not wash my hair for a couple of days to allow the henna color to develop on my tresses. Actually, I am trying more co-washes these days (washing hair with only conditioner), and just washing my hair with shampoo once a week. I noticed my hair has felt softer since I started doing this. Some people just do water rinses and use baking soda and apple cider vinegar to rinse their hair a couple of times a week instead of using shampoo and conditioner, but I just find using more natural shampoos and conditioner, and using the shampoo less frequently works for me. Also, henna is a natural conditioner, and makes your hair appear thicker after application.